Razor-blade sharpener



Nov. 23 Z 1926.

H. C. KELLOGG 'RAZOR BLADE SHARPENER Nov. 23 192e. 1,608,103

\ H. C. KELLOGG RAZOR BLADE SHARPENER 'Z6 w Y Y* z2 Y i` Y v 1% 5g@ 'y i9 z frzzferz for h, erker? f/infor? jllafgg Patented Nov. 23, 1926.

HERBERT CLINTON KELLOGG, OF MINNEAPOLS,

MLNNESGTA, ASSIGNOR OF ONE-HALF TO CHARLES A. RICKERT, OF MINNEAPOLIS, MNNESOTA.

RAZOR-BLADE SHARPENER.

Application filed May 26, 1924. Serial No. 715,786.

My invention relates to improvements in razor blade sharpeners.

An object of the invention is to provide a power driven Sharpener of the present nature designed to accommodate a plurality of blades, yet consisting of a limited number of parts capable of production at relatively small cost and capable of long use without incapacitating wear.

Another object of the invention is to provide a device of this kind, wherein thel interchanging of lblades may be readily accomplished without discontinuing the operation Yof the machine.

A further object is to supply a Sharpener of the present nature employing finishing and honing surfaces as well, the blade holders being adapted to be stationed with respect to said surfaces, whereby the desired abrasive action of said surfaces is had with the blades in their holders.

With the foregoing and other objects in view, which will appear in the following description, the invention resides in the novel combination and arrangement of parts and in the details of construction hereinafter described and claimed.

In the drawings, Fig. l is a plan view of a sharpener embodying my invention; Fig. 2 is an elevational view thereof; Fig. 3 is a vertical sectional view taken on the line of Fig. 1; Fig. 4 is a perspective view, in detail, the same illustrating one of the holder bar mountings; Fig. 5 is a sectional on the line 5-5 of Fig. 1; Fig.' 6 is an enlarged sectional view of the 'forward end of a blade holder bar, the same being taken as en the line 6 6 of Fig. 3 and Fig. 7 .to is an enlarged sectional view, in detail,

taken as on the line 7--7 of Fig. 2.

Referring to the drawings, it will be observed that my improved sharpener includes a frame A comprising a bed 10 formed with legs 11 thereon and brackets l2, 12EL rising from the ends of the bed 10. Journaled at its ends in said brackets 12, 12a is a shaft 18 upon which spaced discs 1/1, Haare axially fixed. These dises are arranged in pairs, t-he discs 111 being provided, with leather facings 1d and the discs 14a with facings 14 of stone or other suitable honing material. The break through the device indicates that the use of additional discs 14 is conteur View taken transversely of said mounting as,

plated, six pairs of these discs'k being most practical, since that number provides for the simultaneous sharpening of blades in dozen lots. Paralleling the shaft 13 are two supporting bars 15, 15a, which extend from the bracket 12 to the bracket 12 along opposite sides of the disc assembly, said bars being supported at intervals between said brackets 12, 12a by means of standards 10' rising from' the bed 10. The reach of said supporting bar 15 alongside the discs ltrcsts at an elevation'above the shaft 13, that portion of said supporting'bar 15 at the .side of the discs '14a being depressed and lying at a lower elevation than that of said shaft 13. The location ofl the corresponding .reaches of the supporting bar 15fL is reversed with respect to the reaches of the bar 15, above described, as will be seen in Fig. 2

of t-he dra-wings.

For each 'pair of discs 14, ill, I provide two blade holder mountings B, one of which is carried by the supporting bar 15 and the other by the supporting bar 15a. These mountings are identical, each including an elongated body 16, the same being` pivoted between the ends thereof, as by means' of a pin 17 to its respective supportingbar 15 or 15a. The inner extremity of each body 16 reaches inward between the facing, abrasive surfaces of its respective pair of discs 14 or lla, the outer extremity of the body 16 having afiiXed thereto a U-s'haped member 18, as shown (Fig. 5). A yoke-like receiver 19 having outwardly flared, yieldingl branches 19a is swiveled on the forward end of each body 16 and a similar receiver I2O .is interposed between the flanges 18a of the member 1S at the opposite end of the body 16. Said flanges 18a have opposed set screws 21 (Fig. 5) threaded therein to variously hold their respective receivers 2O laterally of their respective bodies 16.

A blade holder C is provided for each mounting B, each holder comprising shank with opposed, yielding` Q23 thereon adapted to receive a razor blade, The jaws 23 of each holder C are brought into gripping engagement with a blade inserted between them through the medium of a bolt 24 and nut 25 (Fig. 6), said bolt being extended through said jaws and formed with a head 2da designed to cooperate with one of the jaws and prevent the turning of ino ffl

the bolt with respect to said jar. Fingerpieces Z5?L on the nuts 25 provide for ready manipulation thereof, whereby the application to and removal of blades from the holders C is quickly and easily accomplished.

The holders C are interchangeable in the holder inountings B, the shank 22 of 'any holder being adapted to snugly lit in the receivers 19, 2O of any holder mounting B. A gauge-pin 2G reaching through the shank 22 of each holder is designed to abut against the rearward edges of the branches 19a of its respective receiver 19, These pins guide the operator in applying trie holders C to the inountings B and prevent said holders from being drawn forward and out of operative positions in their mountings by the action of the discs' 14, 141am on the blades held in said holders.

The shaft 13 is driven in one direction (counter clock-wise, Fig. 3) by ineens of a belt 227 passing over a pulley 2S on said shaft and a pulley 29 on the shaft 30 of a motor 31 secured to the underside of the bed 10.

Mechanism is supplied for rocking the holders B to and fro between their respective discs 111- or 14a. Shifter bars 32, 32 ei;- tending along opposite sides of the diseasseinbly are pivoted, as by means of pins 53, to the bodies 16 of the mountings B on their respective sides of said assembly. A tie-bar 34 joins the shifter bars 32, 32, the former being pivoted to one end of said tie-bar, as at 35,and the latter having a slidable pivotal connection with the other end of the tie-bar Se, as at 36, journaled on a spindle 37 rising from an arm 38 on the bracket 12 is a worm wheel 39, the saine meshing with a worin gear i10 on the shaft 13. An elongated protuberance 39a rising` from the upper face of the worm wheel 39 and extending dialnetrically thereof has a way 391 formed therein. A block 41, slidable in this way 39D is adjustably held in various positions radially of the worin wheel 39 by means of opposed set screws L12 threaded longitudinally in said protuberance 39a. i-i oitman rod hi iig an angular extremity 13 threaded downwardly in said block 111, reaches in approximate parallelism with the shaft 18 to the tie-bar 34 to which it is pivotally connected, as at 411. Rotation of the shaft 13 by the motor 81, causes the rotation of the worm wheel 39, which functions as a crank wheel, the motion of said worin wheel being transmitted through the pitman rod tie-bar 84 and shifter bars 32, 32a to the holder inountings B. lilith blades fitted in the holders C and said holders applied to the inountings B, said blades are rocked bach and forth between the abrasive surfaces of their respect-ive discs 14e or 1li-a. To inincrease or diminish the pressure of said blades against the sharpening surfaces of the oiscs, it is only necessary to suitably shift the block l1 in the way 39". through inherent or attained structural inaccuracies in a holder C or mounting B, the blade therein is caused to bear again one of the ab 1asive surfaces of its respecti. discs with greater pressure than it does against the opposing abrasive surface, this `may be corrected a ,-d such pressure equalized by suitably adjusting the set screws 21 in the member 18 of the mounting B.' ln this connection and rem boring that the forward receiver 19 is swiveled on the body 1S. it willbe understood that the adjustment. of

the receiver 2O from one side to the other will result in variously stat-lening the j ward end of a holder C between its respective discs, whereby the pressure of a blade against the abrasive facings on said discs may be readily attained.

ln use, the resharpening of blades d not ordinarily require the honing theieof, in which event the discs 111 faced with leather or other finishing surfaces are employed. Coniining himself to the use of said dscs 1i and having attained the proper adjustment of the block 41 inthe way 39h and of the receivers 2O on the bodies 16, the operator has only to change the blades in the holders C as they become sharpened, it being iis-cess of course, to reverse' the blades of the doi edged type. vIn changing a blade, the operaw tor lifts the holder C fron its inountin l as it carries the blade ar. y from one o; sharpening discs. ing, the holder C is easily manipulated 'to free a blade and to talre a new grip on blade, when reversed, or to talle a grip on a fresh blade. Again fitted with a blade`r` the holder C is'readily seated in the reeeiv 19, 2O of its mounting B said inounti je swings away from one of the discs toward its companion disc. rEhe arrangement of the inountings B for the discs 141, provide.: for a movement of the abrasive surfaces away from the edges of the blades as will be observed in This proviso-n inl desirable in finishing the cutting ed?, blades, but is not. entirely practical. in honli To provide for moven'ient of abrasive faces against the edges of the blades, l have arranged the inountings B for the discs 1l in a manners which is the reverse .of that the inountings B for the discs 1a. This variation in the arrangement of the mountings B with respect to the dises 14, 111n is best ln these figures.

seen in Figs. 2 and 3. will be observed that the sharpening faces of the discs 14 turn against Jl tue edge,V of the blades presented thereto, which surfaces of stone or other suitable material etfectively hone said blades. rfhe use of the discs 14?- does not interfere inany way with the use of the discs lil. Blades applied 'Lo Detached from its iiiountkff.

said discs 14 in identically the same manner as they are to the discs 14, are readily honed, when that is necessary, while the finishing of other blades is being effected by the discs lll.

Among the numerous advantageous feaj tures resident in my presentimprovement, attention is particularly invited to the compactness of the device, its relatively few parts, the large capacity thereof and the ability of the improvementto meet the diierent needs as noted above.

Changes in the specific form of my iii-- vention, as herein disclosed, may be made within the scope of what is claimed without depart-ing from the spirit of my invention.

Having described my invention, what I claim as new and desire to protect by Letters latent is:

l. In a device of the class described, a frame, a pair of spaced discs, one facing the other and each provided with an abrasive facing, means for turning said discs, a support, amounting, including an elongated body piv-oted on said support, yoke-like receiversspaced longitudinally of said body,`

one receiver being swiveled on the body and the other movable laterally thereof, and means for securing said laterally movable receiver in adjusted positions, a blade holder for the mounting, comprising a shank and blade gripgin0r jaws on the shank, said shank being removably applicable to said receivers, and means for'swinging said body to oscillate the holder and thereby carry a c e in the jaws thereof from position conting with one facing to position contact# with the other facing and back again, adjustability of said laterally movable receiver providing for the attainment of equal pressures of the blade against said discs.

2. ln a ydevice of the class described, a frame1 a shaft revoluble in said frame, pairs of discs .axially fixed on said shaft, the discs of each pair being spaced apart and provided with inner abrasive facings, means for rotating said shaft, supports at either side of the disc assembly, a pair of opposed blade holder mountings for each pair of discs, one holder mounting of each pair being pivoted on a support above said shaft and the other on Aa support-beneath said shaft, certain of said blade holder mountings at either side of the disc assembly resting` above the shaft and the remainder therebeneath, a blade holder for each holder mounting, each mounting includingadjustable receiver elements for altering the anguiar relation of a holder with respect thereto, two shifter bars, each common to and pivotally connected with the holder mount-ings at one side of the disc assembly, a tie-bar joining said shifter bars,'a crankwheel geared to said shaft and a pitman connecting the crank-wheel with said tiebar, the connection between said pitnian and crank-wheel being adjustable radially of the latter.

3. In a device of the class described, frame, a shaft revoluble therein, a pair of spaced discs, axially fixed on said shaft, each disc being provided vwith an abrasive facing, means for turning said shaft, a rocker mounting, a blade holder for the mounting, a worm gear on said shaft, a worm wheel in mesh with said gear, a pitman rod having a connection at one end with said worm wheel, and at the other end thereof with said mounting, the connection between said rod and wheel being adjustable radially of said wheel, said rod being adapted to oscillate the mounting and thereby carry a blade in the holder therein from position contacting with one facing to position contact-ing with the other facing and back again, said mounting` embodying means for adjusting' the holder with respect thereto, whereby equal pressures of the blade against said dises may be attained.

d. A. razor blade Sharpener comprising a revoluble-"shaft, a plurality of stropping disks mounted on said shaft, a plurality of honing disksmounted on said shaft, blade holders positioned at one side of the center of said shaft associated with said stropping disks, blade holders positioned on the other side of said shaft associated with said honing disks, said holders being so arrangel that these associated with the honingv disks present the blades with their edges opposed to the direction of rotation of the shaft while the holders associated with the stropping disks present the blade edges Vin the direction of such rotation, means for rotating said shaft, and means for rocking said holders towards and from the faces of said disks.

5. A razor blade Sharpener comprising a revoluble shaft, a honing disk mounted thereon, a blade holder adapted to support a blade in proximity thereto with its'cutting edge opposed to the direction of rotation of said shaft, a stropping disk mounted on said shaft, a blade holder adapted to support a blade in proximity to said stropping disk with its cutting edge disposed in the direction of rotation of said shaft, and means for moving said blade holders toward and away from said disks.

6. In a device of the class described, a frame, a shaft revoluble in said frame, pairs of discs axially fixed on said shaft, the discs of each pair being spaced apart and provided with inner abrasive facings, means for rotating said shaft, supports at opposite sides of the disc assembly, a pair of opposed blade holder monntings for each pair of discs, one holder mounting of each .pair being pivoted on a support above said shaft lill;

:md the ohei on e Supper?, beneath said shaft, certain said blade holdei' mountings at eihei eide of he dise eesemblv resting above the siiai'fi zuid the 'en under inerebeneath, e blade hold-er for each holder i'nouii'iiig, and aus swinging Said mountiiigs to oscilae ehe hifiu'ers and *diereby carry the bladeg therein beek and oi'h between .Sharpening positions against their respective abrasive facings.

in eszimony Wheieoi, l have Signed my e name to this Specification.

HERBERT CLNTON KELLOGG. 

